from tkinter import *
x = int(input("Введите координату x"))
y = int(input("Введите координату y"))
N = int(input("Введите N"))

coords = [0,0,10,0,10,10,20,10,20,20,10,20,10,30,0,30,0,20,0,10]
if N==0 and x>=0 and x<=500 and y>=0 and y<=500:
        pass

else:

    if N>0 and 0*N+x>=0 and 0*N+y>=0 and 30*N+x<=500 and 30*N+y<=500:
        pass
else:

if N<0 and 30*N+x>=0 and 30*N+y>=0 and 0*N+x<=500 and 0*N+y<=500:
        pass

else:

    print("Размер фигуры превышает максимальный размер")

    exit()

root = Tk()
root.title("ИТ марафон")
root.geometry("500x500")

canvas = Canvas(bg ="white", width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)
canvas.create_polygon(coords
                      [0]*N+x, coords [1]*N+y,
                      coords [2]*N+x,coords [3]*N+y,
                      coords [4]*N+x,coords [5]*N+y,
                      coords [6]*N+x,coords [7]*N+y,
                      coords [8]*N+x,coords [9]*N+y,
                      coords [10]*N+x,coords [11]*N+y,
                      coords [12]*N+x,coords [13]*N+y,
                      coords [14]*N+x,coords [15]*N+y)

root.mainloop()
